Some questions about my recording audio

[aifang]

I am trying to record audio using the MAX4466 op-amp and VS1053 shield that I bought from Kynix. I am able to record audio by connecting OUT --> MICP, GND --> MICN, GND -> GND. 

The recorded audio seems to have a very low gain i.e. I am barely able to hear what has been recorded in a room. I tried varying the gain using a potentiometer.  The recordings are generally noisy so I’m not able to listen to what is actually being recorded. 

The recordings are marred by some noise (Link for the sample). While I am not trying to achieve high quality audio using an arduino + a breakout on a breadboard, I would like to record any conversation within a few feet (of course with the consent of people being recorded). 

My questions are: 

a) How do I avoid the noise that is affecting the quality of the recording?
b) How do I improve the gain of the recording so that I am able to hear something when I play the recorded file?
c) If it is not possible using the MAX4466 breakout, is there an alternative to record the audio?

[aifang]

Oh,sorry to post on the wrong forum...but I don't know how to delete it
Of course , if anyone can help me ,I'll be very grateful!

[The Soulman]

If there is some audio but to low volume you'd probably need a pre amplifier, what microphone are you using?
elektret type need a bias voltage to function properly.

disclaimer: I didn't look into the hardware you're using.